Well pump



Aug. 4, 1925.

T. J. COTTON WELL PUMP Filed Feb. 27, 1924 T- 0 V04- .lwo vwl Fla? Ho. l

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Patented Aug. 4, 1925.

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THOllJIAS J'. COTTON, OF BURKBURNETT, TEXAS, ASSEGNOR ,TO LESTER D. MOJVREY, OF

' BURKBURNETT, TEXAS.

VELL PUMP.

Application led February 27, 1924.

10 all whom t may Concern Be it known that l, THOMAS J. COTTON'. a citizen of the United States, residing at v Burlrburnett, in the county o-f `Wichita and State of Texas, have invented new and useful lmprovements `in lll/*ell Punips; and l do declare the following to be a full, clear, and exact description of the invention, suc-h as will enabler others skilled in the art to which it lappertains to make and use the same.

The invention relates to well pumps and4 it is my principal object to provide a device that will retard the amount of sand entering the valve chambers of the pump, thus increasing the life and efliciency of said valves. v f

A. further ob]- ect of the invention is to 3rovide a liquid seal below the working bafrel of a well pump to prevent gas from entering the valve chambers. Great difficulty has been encountered in pumping oil wells heretofore, where they produce gas with the oil, the chief trouble being that the gas prevents the standing and traveling valves from closing, thus preventing` efiicient pumping ofthe well. Attention is also directed to the fact that gas forcing oil through valves when they are partly opened, causes a friction and cuts the oil, thus reducing the volatile constituents and market value thereof.

A further object of the invention is to provide a vacuum release in connection with oil well Jumps to prevent holding the traveling and standing valves closed.

A further object is to enable the more regular pumping of an oil well by regulating the flow of oil into the pumping chamber, and also provide fluid in the perforated tubular member as hereinafter described, at all times to prevent corrosion of the perforations therein. v

Yet a further object is to provide a settling chamber for sand below the pumping chamber that can be easily emptied and cleaned. Y

TvVith the foregoing in view, the invention resides in the novel subject matter hereinafter described and claimed, the description being supplemented by the accompanying drawing forming a part of this application, wherein,

Figure l is a partly sectioned view.

Figure 2 is an elevation of Figure l.

Spral No. 695,494.

Figure 3 is a partly sectioned view of the perforated member and the settling cham- Y bei'.

ing nz re ciea 'ly illustrated in Figure 3. I

have found it more desirable to have sixteen holes spaced in staggered relation having four holes on each quarter of the tubular member 5, however, a greater or less number of holes may be used when desired. 6 is an air hole in the side of the tubular member 5 for the purpose hereinafter set forth. 7 is a. coupling' threaded over the lower end of the tubular member 5, as shown. 8 is a cylindrical member threaded into the lower end of the coupling 7. The lower end of said cylindrical member being closed, as shown in Figure 3. 9 is a tubular member threaded into the central portion of the Cou` pling 7 and extending upward in the tubular member 5, the upper end thereof being spaced below the bottomof the coupling 2. 10 is a tubular member attached to the lower portion of the standing valve 3L and projecting downward a substantial distance into the upper portion of the tubular member 9, the outer wall of the tubular member l0 being in spaced relation with the inner wall of the tubular member 9. It will be noted that the holes 5 are of a greater diameter than the hole 6 in the tubular member 5.

ln operation, the device is lowered to the botto-m of a well having tubular connection to the top of the well, the cylindrical member 8 rests on the bottom of the well and may be of various lengths to enable the spacing of the perforated member 5 any desired distance from the bottom of a well,

oil comes into the tubular member 5 through the perforations 5 therein and rises above the top of the tubular member 9 and flows therein, the oil is pumped therefrom through the tubular member l0, a portion of the sand contained in the oil will settle in the noted that this device prevents the vacuum of a well from holding the valves closed, andl also prevents the gas of a well from holding bottom Vof the tubular member 5 above the vacuum iii the tubular member 5, until'sufw 4 tached to -thef lowerl end offsaid per orated coupling 7, however, the greater portion of the sand in the oil will settle through the `tubular member 9 into the cylindrical inein-` bei 8 where it may be emptied When the tubing is pulled from the well. It will be noted that the oil in the tubular member caiinot be pumped below the level of the hole 6 therein for the reason thatfwheii the oil-isi lowered to the level of the hole 6, air will `come in therethioughthereb57 releasing the fioient oil has come into the said tubular member fto raise the level of the oil above said holle 6, Ythus preventing the vacuum from holding the standing and traveling lvalves closed. The weight of the oil in the tubular member 5 will prevent gas Vi'iom en-f tering therein and holding the said travel-4 ingand standing valves open, it will be the valves open, tliuspi'ovidiiig the desired pumping conditions at all times.

It is believed from the oregoing de-` seription'the nature and advantages, as well as the operation-of `the device, will be readily apparent, however, I desire toindicate clearly inthe record that I dofnot limit myself yto the specific construction herein shown and described, and, that suohvchaiiges may be resorted to, ,whenv desired, 'as fal1"`vvith in the scope of what is herein claimed. That I claim is:

In combination, a Well pump including a plunger, if-standing valve and a traveling valve, a tubular member attached to the lowf er end ol said@puinp,having alplurlity of holes intermediateits'ends, al nip 'leatf tubularj member 1having a' `centrally reduced Vthreaded portionf therein, a centrallydis p ose d Vtubular :member threaded i into 1 `the reduced portion ot said? nipple and extending upward inthei said perforated tubular member, the 'topi thereof being?sp'atxed` `'below the bottom fot-thefsaidwell pump, asmalI hole in the said perforated tubularmembei spacedibelow lthe top ofilithefsaid f centrally y"dislao-sedl itu-billar 'member` so as to Arelease-the vacuum therein When'theoil is lowered" -to that-level,J vcylindrical member" attached to the lower end of thefsaidcoupling the lower end thereof bein closed.

li THOMAS` fC TTON. 

